/Engine/Source/Runtime/MovieScene/Public/MovieSceneSpawnRegister.h
Purge any memory of any objects that are considered externally owned
void ForgetExternallyOwnedSpawnedObjects ( [FMovieSceneEvaluationState](API\Runtime\MovieScene\Evaluation\FMovieSceneEvaluationState) & State, [IMovieScenePlayer](API\Runtime\MovieScene\IMovieScenePlayer) & Player )